Séminaire Univers / |
| « Primordial non-Gaussianity from preheating » |
|
Andrei Frolov |
| I will talk about phase transitions and entropy production at the end of inflation in the early universe. Dynamics of preheating is non-trivial, and can convert isocurvature modes of light fields generated during inflation into curvature fluctuations imprinted into observable CMB temperature anisotropy. Curvature fluctuations thus produced are typically non-Gaussian. I will discuss their observational signatures, and our efforts to construct local non-Gaussianity estimators to map out such signal in real data. |
|
mardi 28 mai 2019 - 11:15 Salle 281 Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |